peters



v@uitrit tatts attent @fthe JAMES H. Mauna-.0EWAsn1NeT0N,nisTRIcm OF'GOLUMBIA, ASSIGNOR c To HIMSELFAND n.13, n. Nev-INS, oETHEsAME PLAGE.-

Letters new No. 80,799, dated August 14n-'1868;

IMPROVEMENT In snUTTnR-ornnnrons,

tro ALL'WHOM IT MAY ooN'cnnNfI I Be it known that I, JAMES H. BARKnln-ot Washington, ini-'the District of Columbia, have invented en Improvement inthe'Devices hithertoV Employed-in O pcning arid Closing Window-.Blinds at the inner side; and I do hereby declare that 'the following is 'a full and exact description'tbereof, referencefbeing l,had 'to' the. accompanying drawings, and to the letters of reference marked thereon, making apart of this specification.

Similar letters indicate corresponding parte. I i i Figure 1 is a perspective view of window and blind with my invention applied thereto.

Figure 2 is a topviewylooking down-from above, representing the application of my invention to thev'vin- .dow and blind or shutter. -v l Figure 3 is asideviewof the'same; v My-inve'ntion consists of an improvement in themethods former-1y employed for operating'wndow-blinds or shutters at the inner side, cr within the apartment to which they are ai '.ta.ched; and its object-is to obtain .a more serviceable and compact device than the oneshithe'rt'o' in use for that purpose, sothat there will be no necessity of changing the proportions 'or relations of 'any part of the window-casing orshutters in the application of themechanism whichopens or closes'the sain f l To enable others skilled in tbe-art 'tofmake and 'use'my invention, I will proceed; to` describe itsconstruc-v tion and operation. 'Y

A-'represents the blinder shutter, attached by hinges inthe usual way. B is .the'windoti-casing C is the sill.4 Y 4` I' 4 l Within the sin C @screw-shaft, D, is ltngituaimuy fitted. rho inner end ofthsaid shaft, whicnextenas A within the apartment, has attached'to .it acrank, E. On the shaft D a nut, F, is'tted, to which isattached a jointed bar, G, the endoi which is'securcdin suchamanner-as 'to allow rotary mot-ion) to the bottom of the turni.`

'The' operation-is as followsz. v

When the crank' E 4is turnedtlie.screwshat`t, of v `course, causes the nut'F to move outward or inward, according to the directionof the force appledl; that `i`s to say, when `the'crank-E is turned from righ-t tolett, the nut F moves outward, when 'turned-from left to'right, inward. 'i v l .'lhc motion communicatedlto the nut F actuates the jointed -bar G, towhicllit is attached, and the'v jointed bar operatcstbe shutter; causing itftolope'nor close, according to the direction in which the crank is turned. and firmly bolds'it in its position, when. either partially orxvholl'y open. l"

'The end o f the-outer limb `of the said jointed bar G isprovided w'ith-a bolt, which fits a socketon thebottom-of the shutter A, so .that the said shutter, wheiropcn, can'be lifted 'from its hinges,-andal so disengaged from the jointed bar Gat the same ltime'. `Asthe outerv'liinb 4ofv the jointed bar passes underfthefshutter, it 4is almost entirely out of sight when the shutter is open.

[The 'outer limb of the jointed bar Gis made straight onone side, and curved on thehither. The advantage of this mode of Aconstruction is this: lWhen the shutter is openedor shut, the curvilinear shape of 'the outer limb of thejointed bar Gallows it to pass in'and out of the s'ill C-, through an opening of'the saine size as that required rby theinner limboi` the bar G, so that, when'the-shutter is open,tl 1e open i ng ;in thegsill isentirely "lled up by the inn'er limb of the jointedy bar G,'thusexcluding wind, rain', and .sn`w,: and 'the actidn of the weather. f v

As the screw-shaft D 'and jointed bar licfinA thesame straight line, perpendicular to thesill, it'. isimpossibl'el 'that a force appliedwfrom `the outside c bul'd'ncquire lever power from the formioi'gthe jointedba, :and thus 'wrenchor dislocate the mechanism. i Y 1 Y lli-amenait that'devices-are in use-'ier the openingand closing o f window-blinds. or shutters within Vthe sonas 2 apartment to which they are attached, by means of L crank n .nd screw-shaft, but these `devices, as far as I am annie, have been arranged in ai different manner from my own, and require much more space for the actuatingmcch llliiam. Y I do not claim,irrespeetive of the means employed, opening oiclosing window-blinds or shutters en the inner side of an nparbment; nor do I claim the cmnk E, the screw-shaft D, or the nut F, or the combination of' the said shaft D and nut F, or any parbthereof; but;

I do claim as new, and desie to secure byl Lettersv Patent- '.Fhe jointed bar G, constructed in the form herein set forth, and applied to the Window-blind and easingsubstantially as and for the pui-poses set forth; I v JAS. H. BAKKER.

v Witnesses:

M. H. STOWE,

J. RUPPERT. 

